Multi-hole nozzle

Primary fluidizing air is distributed at the bottom of the reactor through a multi-hole nozzle. A series of electric heaters upstream of the distributor nozzles preheat the air. For combustion, secondary air is added for more complete combustion of the fuel. Secondary air can be injected anywhere along the reactor, but for all combustion tests reported here secondary air was injected only at the center of the main reactor column. Secondary air was not preheated. 

FIGURE 1.42 Ante-chamber with insulation cap a Multi-hole nozzle b insulation cap [24]... 

Dahlander, P. and Lindgren, R. (2008) Multi-hole injectors for DISI engines Nozzle hole configuration influence on spray formation. SAE Paper 2008-01-0136. 

Pyronol is typically pressed to annular tablets of densities of 3.45 gcm These tablets are assembled in a steel tube dosed at one end by a multi-hole graphite nozzle to allow for an either linear or centrosymmetric array of liquid metal jets... 

Figure 1.88 U -type frame with hole and opening forming an injection nozzle structure (left) for an interdigital multi-laminating feed of V-like superstructure (right) [34] (by courtesy of AMI).

This cyclone mixer comprises a cylindrical mixing chamber with many nozzles, arranged on the circular arc of the chamber (see Figure 1.113) [131]. At the the center of the floor of the chamber an outlet hole collects the multi-laminated streams. 

Further to single-hole orifice plates for droplet generators, multi-nozzle or multicapillary devices were already used by Dabora [21], as discussed above, for producing sprays of monodisperse droplets. For producing separate liquid jets from showerhead nozzles with nozzle holes in thin orifice plates, a minimum spacing s of the nozzle holes with diameter d must be exceeded to avoid coalescence of the jets at the downstream side of the orifice plate. According to Walzel, this distance is ensured by the relation [7]... 

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